Air-line oiler



'Jan. 6, 1931. F. M. SLATER AIR LINE OILER Filed Dec. 1, 1928 INVENTOR.1 5 a? M67 atcz HIS ATTORNEY 25 s Figure 1 is a Patented Jan. 6, 1931 1"UNIT'.

s P T Fri-CE FRED M. SLATER, OF EASTON, PENNSYLVANIA, ASSIGNO R TOINGERS OLL-RAND GOM- PANY, OF JERSEY CITY, JERSEY, A CORPORATION OF NEWJERSEY AIR-LINE ILER Application filed December 1, 1928. Serial No.323,089.

This invention relates to oiling devices, but more particularly to anair 11116 01181 adapted to be attached to a pressure fluid supply lineused for conveying pressure fluid to rock drills and other devicesintended to be lubricated. l I g The, objects ofthe invention are toprevent interruptions in drilling operations for the purpose ofintroducing lubricant to the 0 rock drill, to insure a constantanduniform delivery of oil in a suitable state into the pressure fluidflowing through the oiler in any of the various positions which theoiler may occupy, to eliminate the chances of flooding the mainpassageway with oil when the machine to whichthe oil is being suppliedis idle, and in general, to simplify'the construction and to reducethecost of manufacturing oilers of this type to av minimum.

e Other objects will be in partobvious and in part pointed outhereinafter. In thedrawings illustrating the invention andv in whichsimilar reference characters refer to similar parts. .2

longitudinal sectional elevation of an oiler constructed in accordancewith the practice of the invention, and

Figure 2 is a transverse view taken through Figure 1 on the line 2-2looking in the direction indicated bythe arrows.

Referring more particularly to the drawings, A designates generallythecasing of the oiler comprising in this instance a pair of heads B and Cand an intermediate tubular 5 portion D. the interior of which-serves asa 1 reservoir E for oil. ,The oil may be introduced into'the reservoir Ethrouglra filling opening -F in the head B. The outer portion of thefilling opening'F. is threaded as atG rote receive a threadedplug Hwhereby the filling opening F may be sealed. The heads B and C may besecured to the tubular portion 1) in any suitable manner, such as bywelding or other well knownrnethod which will assure fluid tight jointsbetween the.

tubular portion D and theheads.

i The heads B and C are providedwith-pa's- I sages J andKtheouterportions L of which are threaded to enable the oiler to bethreadedlyconnected to a pressure fluid supply line V interposed betweenthe heads B and C and extending in this instance coaxially through thereservoir E is a hollow member or pipe P which may have abore-substantially equal in cross'sectional area to the passages J andK. The interior of the pipe P fornis apassageway Q, and serves as acontinuation of the pressure fluid supply line. The pipe P is preferablyclamped fixedly between the heads B andC and extends in this instancewith its ends into recesses R in the heads.

. The means whereby pressure fluid is introduced' into the reservoir Eto exert a pressure on the oil therein and by which oil is conveyed fromthe reservoir to be delivered into the passageway Q consists in thisinstance of a tube S which maybe secured to the pipe P only at its endsT and U. The ends T and U project into apertures V in the pipe Pandinay, if desired, extend a slight distance into the passageway Q sothat a portion of thepressure fluid flowing through the passageway Qmaybe readily diverted into the tube S, The apertures V in the pipe Pare preferably located in the ends of the reservoir E'so that advantagemay be had of any slight variations in pressure between the points atwhich the ends of the tube S communicate with the passageway Q.

From the end T of the tube S'the tube extends in a forwardly, or righthand, direction, as Figure l is viewed, and generally longitudinallythrough the reservoir E and is developed into a looped portion W whichpartly encircles the pipe P andpreferably lies near the forward end ofthe reservoir E. From the loopedportion W the tube extends rearwardlythrough the reservoirfE and is developed into alooped portion X whichalso rearward end of the reservoir E, although on the opposite side ofthe pipe to that on which the looped portion W lies.

From the looped portion Xthe tube S again extendsin a generallylongitudinal direction through the reserivoir E to the point at whichthe end U is secured to the pipe P; Due to this arrangement a portion ofthe pressure fluid flowing through the main passageway Q, Will bediverted into the tube S by either the end T or U, depending upon thedirection in which the main stream of pressure fluid flows, and willagain issue from the other end of the tube into the main passageway.

In the looped portion X are formed in this instance a pair of ports Ywhich afford comentire length of the tube and will municationbetween thereservoir E and the interior of the tube at this point. The ports Y arepreferably of small cross sectional area so that oil in only minutequantities may pass therethrough. These ports Y also serve to admitpressure fluid from the tubeinto the reservoir to act on the oil thereinfor forcing it into the tube S. Similarly, in the looped portion WV areformed a: pair of ports Z, only one of which is shown, for admittingpressure fluid from the tube S into the reservoir and for admitting oilfrom the reservoir E into the tube.

If desired screens 6 may be disposed'over the ports Y and Z in order toinsure against the admission of solid matter from'the reservoir E, suchas may be entrained by the ,oil in the reservoir E and such lubricant.

r The operation of the device is as follows: With the oiler connected tothe pressure fluid supply line-O in such manner that the pressure fluidwill enter the oiler at the passage J and will flow in the direction ofthe passage K, a portion of the presure fluid will enter the tube S atthe end T and will flow through the again issue at the end U of the tubeinto the main passageway Q.

Immediately after the pressure fluid has been thus supplied to the mainsupply line, pressure flowing through thetube S will enter the reservoirE and will create a pressure therein equal to that in the main supplyline. If then the machine, such as a rock drill, which is intended tobeh bricated is set in opera-tion, the fluctuations in pressure dueto-the cut off and admission of pressure fluid into the rock drill willresult in a corresponding fluctuation in the reservoir E.' Thesepulsations will have'the eflect of emulsifying the oil will then enterthe ports Y and will be carried by the pressure fluid flowing throughthe tube Sto the end U of the tube Where it will be injected 2 into themain pressure fluid stream and will be carried thereby to thedrill.

. llVith the oiler in the positionillustrated, the ports Z may of courselie 'above the body of oil in the reservoir E. ,These portsZ will 7 Ithen onlyfserve to admit pressure fluid into the reservoir. By properlyarrangin g the ports Y and Z with respect to each other one of theseports is certain to be submerged in V the oil in the reservoirirrespective of any e position which the oiler may assume and anadequate supply of oil to the passageway Q,

will therefore be assured.

The present invention has been found to be exceptionaly'well adapted forthe purpose intended, particularly foruse in connection with drillingoperations where the oiler is attached to the supply line and willtherefore constantly be shifted about from one position to another. Oneof its principal advantages is that irrespective of any position inwhich the oiler may lie it will be impossible for the oil in-thereservoir E to drain into the main passageway Q after the supply ofpressurevfluid to the oiler has been shut off. This is partly due to-thefact that one of the ports Y or Z will at all times lie above the levelof the oil in the reservoir. Therefore, any pressure fluid which mayexist in the reservoir after the supply thereto has been cut-off Will atonce escape to the main passageway through the uncovered port in thetube without forcing the oil into the passageway as is frequently thecase in oilers of this type.- For the same reason it is impossible forany considerable amount of oil to drain from the reservoir into thepassage way in the absence of pressure fluid in the supply line asa'portion or portions of the tube will] always lie ata higher level than'thesurfa'ce of the oil. As a consequence only a small portion of thetube may be filled with oil which may, upon the resumption of drilling,be forced into'the passageway Q, but the amount of oil thus stored inthe tube will not be of sufiicient quantity to result in the undesirableflooding of the drilling DIBCllanism or other machine to which thelubricant is being supplied.

I claim: v

1. An air line oiler, comprising a casing forming a reservoir for oil, amain passageway'for pressure fluid, a passage in the casingcommunicating at itsends with'the main )assa ewa at Joints near theendsof the sageway at points spaced along the length of said passagewayto deliver oil'i'nto the passageway and pressure fluid into thereservoir, said tube having a port to admit oil from the reservoirinto'the tube and pressure fluid from the tube into the reservoir.

3. An air line oiler, comprising a casing forming a reservoir for, oil,means forming a passageway for pressurefluid throughj'the reservoir andinterior of the tube.

ends of the reservoir,

.the ends of the reservoir, looped portion casing, and a tube in thecasing having a plurality of longitudinally extending portions andcomunicat-ing at its ends with the passageway at points spaced along thelength of said passageway to deliver oil into the passageway andpressure fluid into the reservoir, said tube having a port to admit oilfrom the reservoir into the tube and pressure fluid from the tube intothe reservoir.

a. An air line oiler, comprising a casing forming a reservoir for oil, amain passageway for pressure fluid, a tube in the reservoircommunicating at its ends with the main passageway at points near theends of the reservoir to by-pass a portion of pressure fluid from onepoint to another in themain passageway, and ports in the tube located sothat at least one portis submerged in the oil and at least one port ofthe oil.

5.;in air line oiler, comprising a casing forming a reservoir for oil,means forming a passageway for pressure fluid through the casing, a tubeopening with its ends into the passageway to deliver oil from thereservoir into the passageway and pressure fluid from the passagewayinto the reservoir, and looped portions in the tube lying in the ends ofthe having ports to afliord communication between the reservoir and the6. An air line oiler, comprising a casing forming a reservolr toroil,means forming a passageway for pressure fluid through the casing, a tubeopening with its ends into thepassageway and through which pressurefluid flows to deliver oil from the reservoir into the passageway,looped portions in the tube lying in opposite sides and in opposite anda port in each looped portion affording communication 'between thereservoir and the interior of the tube.

7. An air line oiler, comprising a casing forming a reservoir for oil,means forming a passageway for pressure fluid through the casing, a tubeopening'with its ends into the passageway and through which pressurefluid flows for conveying oil from the reservoir into the passageway,looped portions in the tube lying in opposite sides of and near andaport in each for admitting pressurefluid into the reservoir and oilfrom the reservoir into the tube.

8. An air line oiler, comprising a casing forming a reservoir for oil, ahollow member extending through the casing to form a pas sageway forpressure fluid, a tube coiled through the reservoir and opening with itsends into the passageway adjacent the ends of the reservoir forconveying pressure fluid from the passageway into the reservoir and oilfrom the reservoir into the passageway, and a port in the tube foradmitting oil from lies above the surface the reservoir into the tubeand pressure fluid from the tube into the reservoir.

9. An airline oiler, comprlsmg a casing forming a reservoir for oil, ahollow member extending through the casing to form a passageway torpressure fluid, a tube opening with its ends into the passageway atpoints near the ends of the reservoir and having looped portions lyingadjacent the casing, and a-port in each looped portion to aflordcommunication between the reservoir and the interior of the tube. I

10. An line oiler, comprising a casing forming a reservoir for oil, ahollow member extending through the casing-to form a passageway forpressure reservoir opening at its ends into the passageway and throughwhich pressure fluid flows, said tube comprising'a pair of loopedportions lying in the ends of the reservoir and a plurality of portionsextending longitudinally of the reservoir, and a port in each loopedportion for admitting oil from the reservoir into thetube and pressurefluid from the tube into the reservoir.

11. An air line oiler, comprising a casing forming a reservoir for oil,a hollow member extending through. the casing to form a passageway forpressure fluid, a tube in the reservoir communicating at its ends withthe passageway at oints near the ends of the reservoir and t 'roughwhich pressure fluid flows, apair of looped portions in the tube lyingin the endsof the reservoir and on opposite sides of the hollow member,a plurality of portions in the tube extending longitudinally of thereservoir and connecting thev looped portions, and ports in theloopedportions for admitting oil from the reservoir into the tube andpressure fluid from the tube into the reservoir.

In testimony whereof I have signed this specification.

I FRED M. SLATER.

fluid, a tube in the v ISO

